Operation of signal-horns.



M. A O

OPERATION OF S' APPLIGATIOL" FILED meal Bag 20, 1910.

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MORTIMER ARTHUR CODD, OF LONDON, ENGLAND.

OPERATION OF SIGNAL-HORNS.

Specification of Letters Patent.

Patented Dec. 20, 191%.

Application filed April 27, 1910. Serial No. 557,963.

To'aZZ whom it may concern...

Be it known that I, .Mon'rnrnn ARTHUR Conn, a subject of the King ofGreat Britain, residing at l Brownlow Mews, Guil ford street, London, inthe county of Middlesex, England, electrical engineer, have invented anew and useful Improvement in the Operation of Signal-Horns, of whichthe following is a specification.

This invention relates to signal horns such as are employed uponautomobiles, motor launches and the like, for giving an audible warningof approach, and it has more particular reference to that type or classof horn having a sound box at its rear end containing a flexiblediaphragm which is rapidly vibrated by mechanical means in order toproduce a powertul roar.

The object of my invention to provide a horn of the foregoing typecapable of giving out a greater volume of sound than heretofore. andwhich will steadily maintain its efficiency.

The invention consists essentially in the combination of partshereinafter fully described.

In the annexed drawing which illustrates the preferred embodiment of myinvention, a designates a sound amplifier or resonating horn, at therear of which is suitably fixed a sounding box or casing 71, which isfitted with a diaphragm c. This box or casing Z) is furnished with anoffset or depending bracket (Z by means of which it can be fixed in anyconvenient position upon the automobile, launch or the like framework.

6 is a disk or pulley mounted adjacent the diaphragm c, and which may bedriven by a small electric motor, flexible shaft f-as shownfrom themotor engine, or any other suitable means. To this disk or pulley e Ipivot one or more loose strikers or fiails g, which, when the disk orpulley c is revolved fly out centrifugally and strike the diaphragmthereby setting" up vibrations and giving out audible sounds through theresonating horn a, and I wish to here point out that I am fully awaresuch mechanism has been en'iployed heretofore in connection with signalbells for cycles and that I make no claim broadly thereto.

The strikers or fiails g may be pivoted to the disk or pulley e in anyconvenient manner other than by means of stud pins 71 as shown. and thedot-and-dash lines indicate the position they occupy when the disk israpidly revolved.

From the foregoing it will be seen that by my improvements I greatlyimprove the etliciency of signal horns of the kind above referred to,and I wish it understood that the specific form described and.illustrated is only by way of example as the size and proportions of thevarious parts would obviously be varied to meet different conditions ofuse.

Vhat I claim as my invention and desire to secure by Letters Patent, is

In signal horns for automobiles, motor launcl'ies and the like of thekind hereinbefore referred to, the combination of av sound amplifier orresonating horn having a diaphragm closed sounding box at its rear and arapidly rotatable disk or pulley provided with one or more strikers orfiails pivoted thereon for striking the said diaphragm, substantiallyasset. forth and for the purpose specified.

In witness whereof I. have hereunto set my hand in the'presence of twowitnesses.

MORTIMER ARTHUR CODD.

itnesses Anrrnp T. BRI'r'roN, R. Lawrence H. ELLIOTT.

